Double blind tests are nothing more than a parlor trick, right up there with seances. You can take something 100% provable and subject people to a DB "test" and come back with 50-50 results. All it proves is that uncertainty increases under the guise of testing. Bias is never eliminated but skewed for all the wrong, unanticipated reasons.
Also, I never heard of doing any type of DB test involving more than a few seconds between samples. Even the Amazing Randy knew that if enough time were to elapse, most would be able to suss out the correct cable and he'd have to pay out that $1million. It's long term listening that audiophiles do to figure things out so he kept the time frame short between takes.
All the best,
Nonoise
Also, I never heard of doing any type of DB test involving more than a few seconds between samples. Even the Amazing Randy knew that if enough time were to elapse, most would be able to suss out the correct cable and he'd have to pay out that $1million. It's long term listening that audiophiles do to figure things out so he kept the time frame short between takes.
All the best,
Nonoise